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During exercise,lactic acid (c³h6O³) forms in the muscles causing muscle cramp. If 5.0 g of lactic acid (c³h6O³) concentrate in your leg muscle's how many molecules of lactic qcid is causing you pain ( = 12.0 g / mol, mol h = 1.008 g/ mol 0 = 16.0g/ mol)

Sagot :

Solution:

Step 1: Calculate the molar mass of C₃H₆O₃.

molar mass = (12.0 g/mol × 3) + (1.008 g/mol × 6) + (16.0 g/mol × 3)

molar mass = 90.048 g/mol

Step 2: Calculate the number of molecules of C₃H₆O₃.

[tex]\text{number of C₃H₆O₃ molecules = 5.0 g C₃H₆O₃} × \frac{\text{1 mol C₃H₆O₃}}{\text{90.048 g C₃H₆O₃}} × \frac{\text{6.022 × 10²³ C₃H₆O₃ molecules}}{\text{1 mol C₃H₆O₃}}[/tex]

[tex]\boxed{\text{number of C₃H₆O₃ molecules = 3.34 × 10²² molecules}}[/tex]

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